var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
//引入jwt工具类
const {authJwt} =require("./src/utils/jwtUtil") 


var usersRouter = require('./routes/users');
var studentRouter = require('./routes/student');

var app = express();

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));


//创建验证jwt的中间件
//如果没有写路径 则表示所有的路径都要进行拦截
/* app.use((req,resp,next)=>{
 
}); */

//验证jwt
app.use(authJwt);
//如果验证出现异常则进入该中间件
app.use((err,req,resp,next)=>{
  if(err){
    console.log(err);
    resp.json({"code":0,"msg":"jwt验证失败"})
  }else{
    next();
  }
})


app.use('/', usersRouter);
app.use('/student', studentRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
